Goldfish Water Care – Best Type, Temperature & Conditioner

So you are thinking about getting a Goldfish? It is important to understand how to properly take care of your Goldfish so that your fish can live a long happy life. I am going to show you What is the best kind of water to use, Water Temperature for Goldfish, and Water conditioner for the tank.

What Is The Best Kind Of Water For Goldfish

The best kind of water to use for Goldfish are Bottled Drinking Water that came from a natural source and is not carbonated. Choosing the type of water to use for Goldfish is very important and can improve or hurt the health of your pet fish.

Other kinds of water discouraged to use:

  • Tap Water– This is bad because it usually is not filtered, contains an unknown amount of various chemicals and other contamination’s.
  • Distilled Water- This is bad because distilled water is most often too alkaline for fish.
  • Reverse Osmosis Water- This usually too filtered and doesn’t contain the basic minerals that fish need to survive.

The best way to get your water is to measure the amount of bottled water is needed for your tank and then try to find sales at the store and buy in bulk.

The next thing we need now that we have kind of water we need is to condition and prepare the water for your Goldfish.

Best Water Temperature For Goldfish

Water temperature for Goldfish like most other fish is important to the life and health of your fish.

Goldfish are very adaptable to water temperatures that range from 40°F to 75°F but are happiest with a water temperature at 60°F-70°F.

The temperature for breeding Goldfish

The best way to promote spawning of Goldfish is to control the water temperature. In the winter it’s best to keep the temperature at around 55°F and slowly increasing the temperature to around 70°F over the next month. Generally, two degrees a day is good enough.

How to monitor the water temperature

The best way to accurately measure the water temperature of your Goldfish tank is to buy a good aquarium thermometer and make the daily temperature in a notebook.

Below is a good thermometer I recommend for your aquarium.

JCreate Fish Tank Thermometer, Touch Screen Digital Aquarium Thermometer with LCD Display

Best way to control your water temperature

You can control the water temperature of your Goldfish by using a tank water heater. You can adjust the temperature from an outside dial and it will safely warm your tank to the desired temperature.

Below are two aquarium water heaters I recommend

FREESEA 50-300Watt Aquarium Fish Tank Heater with LED Temperature Display


Orlushy Submersible Aquarium Heater,100W/150W/200W/300W Fish Tahk Heater


Now that you have the water temperature under control the last step is to use a solution or water conditioner to help make the water the right level PH and amount of minerals for your Goldfish.

Best Water Conditioner For Goldfish

If you are using the recommended Bottled Drinking water then it almost safe to say that your water is pretty safe for your Goldfish.

Now if you use Tap water or any other water it is required for you to use water conditioner or the water will stress your fish which can cause early disease and death.

Even if you use Bottled Water adding water conditioner can help boost your fish’s defense coat and keep them strong.

What does water conditioner do?

Water conditioner helps remove any of the normal chemicals that are found in tap and filtered water such as chlorine. To humans, this is a harmful amount but to something as small of a fish it can be dangerous.

Some brands have added minerals and nutrients that helps maintains tank water at the best level and reduce stress on your Goldfish.

Below are recommended water conditioners for your Goldfish

Tetra AquaSafe Plus Water Conditioner/Dechlorinator

API STRESS COAT Aquarium Water Conditioner


Do Goldfish Need Water Filters?

Yes, Goldfish like most other fish require water filters to live a healthy life. A lot of people have the misconception that only a small bowl and water is needed. This isn’t true they are quite dirty fish and produce a lot of waste that needs to be filtered out.

Water filters will filter all of the fish poop and leftover food oh yeh tank. It is ideal that you get a filter that has an hourly filter rate of at least 10x the tank size. So if you have a 10-gallon tank your filter rate needs to be around 100 for example.

Types of Filters

External Filters

These are used externally by placing it under or around the tank connecting by a hose. These are generally more expensive but more efficient.

Here is a good external filter

Polar Aurora 3-Stage External Aquarium Filter 265gph with Built-in Pump Kit Canister


Internal Filters

These are much more popular filters and cheaper. They work by putting the filter in the water and filtering it through a filter media that will place the water back in normally through a waterfall motion. They will be found hanging on the inside of a tank.

Here is a good internal filter

Tetra Whisper In-Tank Filter with BioScrubber for Aquariums


Do Goldfish Need An Air-pump?

No, not for most situations Goldfish don’t need air pumps because a water filter will usually provide enough water disturbance to be oxygenated. Most of the times air pumps are used in aquariums for really big and populated tanks or simply aesthetic reasons.

Something people don’t know as well is that the water for a Goldfish tank needs to stay oxygenated or else they will get sick and die. You don’t need to force air into a tank with an air pump but the disturbance in the water will go to the surface allowing oxygen to bind with the water.

I would recommend not getting an air pump for your aquarium unless it’s big or has special fish that need it.

Other Water Care Tips & Information

water care for golfish

Now that you’re on your way to having some happy healthy fish let’s go over some more essential water care for your Goldfish tank.

We have gone over the best type of water to use, what is the right water temperature, and water conditioner for your aquarium. Now let’s take a look at how to maintain your water.

It is best practice to change out 1/4th of your aquarium water every week. This can be done by simply getting a clean bowl and scooping out the dirty water.

Once done you can get a rag or sponge and clean the inside of the glass with detergent-free dish soap.

Then just simply replace the water with new bottled drinking water. Be sure to add the water slowly at room temperature not too cold or too hot.

Fish Bowls and Goldfish and Why They Are Bad

In the past and even still today it was popular to see Goldfish being given away as prizes at fairs and then placed in just a glass bowl with no heater, proper water, or filter. You see this all the times in movies and that is simply a terrible way to keep almost any fish, let alone a Goldfish.

Most people don’t know this but Goldfish actually need quite a lot of care and space to grow to their full potential. Did you Goldfish can grow up to 12-14 inches? That’s crazy. You need at least a 10-gallon tank with all the standard fish keeping equipment mentioned above to properly keep a healthy Goldfish.